The statement is “where two maintenance people work together” it doesn’t say there is a issue or concern. If there was a issue or concern, I would speak with both parties to find out what the concern is. Once that has been establish I would ask them how they would like to see a change. If the ideas that they present is resonable I would implement the change on a trial basis. If it doesn’t work I would establish a new process that meets the needs of both parties.